Ordering Recommendation

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation
Collect

Plain red or serum separator tube (SST).

Specimen Preparation

Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP standard transport tube and freeze immediately. (Min: 0.6 mL)

Storage/Transport Temperature

Frozen.

Unacceptable Conditions

Hemolyzed or lipemic specimens.

Remarks
Stability

After separation from cells: Ambient: 48 hours; Refrigerated: 5 days; Frozen: 6 months

Methodology

Quantitative High Performance Liquid Chromatography-Tandem Mass Spectrometry

Performed

Sun, Wed, Thu, Fri, Sat

Reported

1-5 days

Reference Interval

Test Number
Components
Reference Interval
  5-a-Dihydrotestosterone, LC-MS/MS
Age
Male (pg/mL)
Female (pg/mL)
Premature 100.0-530.0 20.0-130.0
Full Term 50.0-600.0 20.0-150.0
1 week-6 months 120.0-850.0 Not Applicable
1 week-9 years Not Applicable 0.0-49.9
7 months-9 years 0.0-49.9 Not Applicable
10-19 years 0.0-533.0 50.0-170.0
20 years and older 106.0-719.0 24.0-208.0
Tanner Stage I 1.0-47.6 1.0-64.3
Tanner Stage II 3.5-397.9 5.5-95.9
Tanner Stage III 14.8-574.6 11.4-158.3
Tanner Stage IV-V 44.9-511.8 18.7-193.8

Interpretive Data



Compliance Category

Laboratory Developed Test (LDT)

Note

Hotline History

N/A

CPT Codes

82642

Components

Component Test Code* Component Chart Name LOINC
2002520 5-a-Dihydrotestosterone, LC-MS/MS 1848-1
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • DHT (5-a-Dihydrotestosterone by Tandem Mass Spectrometry, Serum)
  • Dihydrotestosterone, LC/MS/MS (5-a-Dihydrotestosterone by Tandem Mass Spectrometry, Serum)
5-a-Dihydrotestosterone by Tandem Mass Spectrometry, Serum